syntax error: select * from sanpham where (idDM = tin or idDM in (select idDM from danhmuc where cap1 = tin) or idDM in (select idDM from danhmuc where dmCha = tin) or idDM in (select idDM from danhmuc where dmCha in (select idDM from danhmuc where cap1 = tin))) order by vitri, idSP DESC